.maincover {
    width: 1280px;
    height: 864px;
    left: 50%;
    background: no-repeat url("images/logo.png") center;
    background-size: 100%;
    margin-left: -640px;
    position: relative;
}

body {
    position: relative;
}

img[alt="登录"],
.maincover>.signed {
    position: absolute;
    right: 51px;
    top: 40px;
    text-decoration: underline;
    display: block;
    font-size: 20px;
    font-family: Arial, Helvetica, sans-serif;
    color: #727479;
}

.search {
    background-color: white;
    width: 400px;
    position: absolute;
    left: 50%;
    margin-left: -200px;
    margin-top: 500px;
    border-radius: 20.5px;
    border: 1px solid #acaaaa;
}

.search:hover {
    box-shadow: 1px 5px 5px rgba(0, 0, 0, 0.1);
}

.search>input {
    border: 0;
    height: 40px;
    width: 321px;
    font: 26px 黑体;
    color: #4d4f55;
    margin-left: 34px;
}

.search>button {
    border: 0;
    background-color: transparent;
    width: 26px;
    height: 26px;
}

.search>button>img {
    width: 100%;
}

.category {
    width: 296px;
    height: 24px;
    margin: 0 auto;
    padding-top: 560px;
}

.category>button {
    float: left;
    margin: 0 2px;
    width: 70px;
    height: 24px;
    font-size: 17.17px;
    border: 1px #acaaaa solid;
    background-color: #f0f1f2;
    border-radius: 12px;
}

.category>button:hover {
    background-color: #8d9191;
}


/*以下为登录框*/

.loginBox {
    display: none;
    width: 657px;
    height: 453px;
    top: 181px;
    left: 50%;
    transform: translate(-50%);
    border: 2px solid #4d4947;
    background-color: rgba(222, 229, 234, 0.79);
    position: absolute;
    z-index: 1;
}

.loginBox img {
    display: block;
    margin: 40px auto 45px;
}

input[id="login"] {
    box-sizing: border-box;
    width: 286px;
    height: 43px;
    border-radius: 20.5px;
    border: solid 1px #dadada;
    padding: 0 27px;
    background-color: #fcfcfc;
    font-size: 20px;
    line-height: 40px;
    color: #a7a8aa;
    box-shadow: 6px 5px 10px 0px #dadada;
}

.loginBox span {
    font-size: 24px;
    color: #4d4947;
    margin-right: 13px;
}

form {
    display: block;
    margin: auto;
    width: 388px;
    position: relative;
}

form>div:first-child {
    margin-bottom: 50px;
}

form>a:first-of-type {
    position: absolute;
    text-decoration: underline;
    color: #727479;
    font-size: 20px;
    right: 0;
    bottom: 10px;
}

.loginBox>i {
    position: absolute;
    right: 0;
    top: 0;
    font-size: 25px;
    line-height: 57px;
    margin-right: 18px;
    font-weight: 700;
}

input[type="submit"] {
    width: 104px;
    height: 41px;
    border: 1px solid #b8babc;
    background-color: #edf1f4;
    box-shadow: -4px -4px 6px 1px #dadada inset;
    font-size: 20px;
    color: #727479;
    border-radius: 20.5px;
    display: block;
    margin: 47px auto 0;
}